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Finding the Fourth Proportional to 90,873.74, 136,338.41 and 46,531.87

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Solution

The fourth proportional to 90,873.74, 136,338.41 and 46,531.87 is: 69,812.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,873.74 : 136,338.41 = 46,531.87 : x
  2. Step 2: Convert to fraction form
    90,873.74/136,338.41 = 46,531.87/x
  3. Step 3: Cross multiply
    90,873.74x = 136,338.41 × 46,531.87
  4. Step 4: Simplify right side
    90,873.74x = 6,344,080,945.61
  5. Step 5: Solve for x
    x = 6,344,080,945.61/90,873.74
  6. Step 6: Final answer
    x = 69,812.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.